Only enable cordz on Linux with thread_local support

Fixes #1365

PiperOrigin-RevId: 503160321
Change-Id: I210f194373c3e08a75d68298a8482be5f1f2227c

absl/strings/internal/cordz_functions.h

@@ -32,18 +32,10 @@ int32_t get_cordz_mean_interval();
 // Sets the sample rate with the average interval between samples.
 void set_cordz_mean_interval(int32_t mean_interval);
 
-// Enable cordz unless any of the following applies:
-// - no thread local support
-// - MSVC build
-// - Android build
-// - Apple build
-// - DLL build
-// Hashtablez is turned off completely in opensource builds.
-// MSVC's static atomics are dynamically initialized in debug mode, which breaks
-// sampling.
-#if defined(ABSL_HAVE_THREAD_LOCAL) && !defined(_MSC_VER)  && \
-    !defined(ABSL_BUILD_DLL) && !defined(ABSL_CONSUME_DLL) && \
-    !defined(__ANDROID__) && !defined(__APPLE__)
+// Cordz is only enabled on Linux with thread_local support.
+#if defined(ABSL_INTERNAL_CORDZ_ENABLED)
+#error ABSL_INTERNAL_CORDZ_ENABLED cannot be set directly
+#elif defined(__linux__) && defined(ABSL_HAVE_THREAD_LOCAL)
 #define ABSL_INTERNAL_CORDZ_ENABLED 1
 #endif